CN218377550U

CN218377550U - Tensioning mechanism

Info

Publication number: CN218377550U
Application number: CN202222965673.3U
Authority: CN
Inventors: 谢良富; 程宏达; 李如意
Original assignee: China International Marine Containers Group Co Ltd; CIMC IoT Technology Co Ltd; Shenzhen CIMC Smart Parking Co Ltd
Current assignee: China International Marine Containers Group Co Ltd; CIMC IoT Technology Co Ltd; Shenzhen CIMC Smart Parking Co Ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-01-24
Anticipated expiration: 2032-11-04

Abstract

The utility model provides a straining device relates to the mechanical transmission field. The tensioning mechanism is used for tensioning the conveying strip and comprises a base and at least two tensioning assemblies which are deviated from each other, each tensioning assembly comprises a moving part, an elastic part and a fixing part, the fixing part is fixed on the base, the moving part can move along the fixing part to be far away from or close to the fixing part, and the elastic part is positioned between the moving part and the fixing part; one end of the moving part, which is far away from the fixed part, is pressed against the conveying strip, and the elastic part can stretch and retract; the movable part is close to the fixed part, and the elastic element compresses for storing energy; the elastic piece extends to push the moving part to be far away from the fixed part, so that the moving part generates an outward tension force on the conveying strip. The technical problems that a traditional tensioning device is poor in tensioning effect on a chain and abnormal sound is easy to occur are solved.

Description

Tensioning mechanism

Technical Field

The utility model relates to a mechanical transmission field, in particular to straining device.

Background

In traditional friction drive's freight process, the required drive power of cylinder mainly transmits through chain device, and in the use, if the chain of sprocket is too lax, the phenomenon that easily appears jumping the chain, skidded, even takes off the chain in transportation process has not only reduced the production progress, has still influenced production efficiency.

Traditional chain device is provided with a fixed overspeed device tensioner and carries out the tensioning to the chain, but, changes when the action wheel with the position from the driving wheel, when making the chain lax, traditional overspeed device tensioner can't compensate the rate of tension of chain, leads to the tensioning effect poor, and takes place the abnormal sound.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is poor to the tensioning effect of chain to solve traditional overspeed device tensioner, and takes place the technical problem of abnormal sound easily.

In order to solve the technical problem, the utility model provides a straining device for carry out the tensioning to the conveying strip, include: a base; at least two tensioning assemblies which are mutually deviated, wherein each tensioning assembly comprises a moving part, an elastic part and a fixing part, the fixing part is fixed on the base, the moving part can move along the fixing part to be far away from or close to the fixing part, and the elastic part is positioned between the moving part and the fixing part; one end of the moving part, which is far away from the fixed part, is pressed against the conveying strip, and the elastic part can stretch; the movable part is close to the fixed part, and the elastic piece compresses for storing energy; the elastic piece stretches to push the moving part to be far away from the fixed part, so that the moving part generates an outward tension force on the conveying strip.

Optionally, the moving part includes a pressing wheel and a support, and the pressing wheel is arranged on the support and used for pressing the conveying strip; the support is movably connected with the fixing part.

Optionally, a first accommodating cavity is formed in the fixing portion, the support is arranged in the first accommodating cavity, a second accommodating cavity is formed in one side, facing the fixing portion, of the support, and the elastic piece is located between the first accommodating cavity and the second accommodating cavity.

Optionally, bosses are arranged on the bottom walls of the first accommodating cavity and the second accommodating cavity and used for limiting the elastic piece.

Optionally, the support further includes a push rod, the push rod is disposed on the bottom wall of the second accommodating cavity and points to the bottom wall of the first accommodating cavity, and a through hole through which the push rod penetrates is formed in the bottom wall of the first accommodating cavity.

Optionally, the side wall of the fixing portion is provided with two notches arranged oppositely, so that the side wall of the fixing portion forms two side ears extending outwards along the axis.

Optionally, the support includes two connecting plates, the connecting plate symmetry parallel arrangement be in the support is kept away from the one end of fixed part, it sets up two to support the pinch roller between the connecting plate.

Optionally, the fixing portion further includes a fixing collar disposed on an inner side surface of the side ear portion, opposite to the connecting plate, for preventing the support from rotating in the fixing portion.

Optionally, the base includes a fixed plate and a moving plate, the moving plate is disposed on the fixed plate, and the moving plate is movable relative to the fixed plate.

Optionally, the base includes a connecting bolt, a waist-shaped hole is formed in the moving plate, a through hole is formed in the fixing plate, and the connecting bolt connects the moving plate and the fixing plate through the waist-shaped hole and the through hole.

According to the above technical scheme, the beneficial effects of the utility model are that:

the utility model discloses a straining device is provided with two at least tensioning assembly that deviate from each other, and the last moving part of tensioning assembly supports from a plurality of directions respectively and presses the conveying strip, sets up the telescopic elastic component between moving part and fixed part, and when the inside elastic component of tensioning assembly extended, promoted the moving part and kept away from the fixed part, produced outside tensile force to the conveying strip. The moving part supports against the conveying strip from two directions, when the conveying strip is loosened, the elastic parts inside the two tensioning assemblies release elastic force to push the moving part to move outwards, so that the moving part compresses the conveying strip, length compensation is realized, a better tensioning effect is realized on the conveying strip of the transmission device, and the technical problem of abnormal sound caused by loosening of the chain is solved.

Drawings

FIG. 1 is a schematic view of a tensioning mechanism;

FIG. 2 is a front view of the tensioning mechanism of FIG. 1;

FIG. 3 is a top view of the tensioning mechanism of FIG. 1;

FIG. 4 is a side view of the tensioning mechanism of FIG. 1;

FIG. 5 is a first schematic view of a tensioning assembly;

FIG. 6 is a second schematic view of the tensioning assembly;

fig. 7 is a schematic view of the installation of the tensioning mechanism on the transmission.

The reference numerals are illustrated below: 100. a tensioning mechanism; 10. a tension assembly; 11. a fixed part; 111. a notch; 112. a side ear portion; 113. fixing a retainer ring; 12. a support; 121. a connecting plate; 122. a push rod; 13. pressing the wheel; 131. a sprocket; 132. a bearing; 133. a rotating shaft; 14. an elastic member; 141. a boss; 20. a base; 21. moving the plate; 211. a kidney-shaped hole; 22. a fixing plate; 23. a connecting bolt; 24. fixing the bolt; 30. a transfer bar; 40. and (4) rolling shafts.

Detailed Description

Exemplary embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments, and its several details are capable of modification in various other respects, all without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present application, it is to be understood that the indications of directions or positional relationships (such as up, down, left, right, front, rear, and the like) in the embodiments shown in the drawings are merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated. These illustrations are appropriate when the elements are in the positions shown in the figures. If the description of the positions of these elements changes, the indication of these directions changes accordingly.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 7, the present embodiment provides a tensioning mechanism 100 for tensioning a conveyor belt 30 on a transmission device, including a base 20 and at least two tensioning assemblies 10 facing away from each other, wherein the tensioning assemblies 10 are disposed on the base 20.

It is contemplated that the number of tensioning assemblies 10 may be increased depending on the number of sides of the conveyor strip 30 to be tensioned, and that a plurality of tensioning assemblies 10 may be disposed around the base 20, each tensioning assembly 10 being adapted to compressively tension a length of the conveyor strip 30 in one direction. The number of the tensioning assemblies 10 in the embodiment is two, two tensioning assemblies 10 are deviated from each other, and the axes of the two tensioning assemblies 10 form an included angle with each other, so that the two tensioning assemblies can be meshed and matched with the conveying strip 30 of the transmission device.

The driving device in this embodiment is a device for transporting tubular objects, the conveying belt 30 is a chain, which is wound around a plurality of rollers 40, and the conveying belt 30 can drive the driven rollers 40 to rotate. As shown in fig. 7, the tensioning mechanism 100 is installed between the conveyor bars 30 to provide an outward tension to the conveyor bars 30, preventing the conveyor bars 30 from slackening.

Referring to fig. 1 to 3, the base 20 includes a fixed plate 22 and a movable plate 21, the movable plate 21 is disposed on the fixed plate 22, and the movable plate 21 is movable relative to the fixed plate 11 for changing a relative distance between the movable plates 21.

Specifically, the two moving plates 21 in this embodiment are oppositely attached to the fixed plate 22. The movable plate 21 is provided with a kidney-shaped hole 211, the fixed plate 22 is provided with a through hole, and the base 20 further comprises a connecting bolt 23; the connecting bolt 23 connects the moving plate 21 and the fixed plate 22 through the kidney-shaped hole 211 and the through hole. When the relative distance between the two tensioning assemblies 10 needs to be adjusted, the connecting bolt 23 can be loosened, and then the moving plate 21 is moved left and right along the axis of the kidney-shaped hole 211, so that the relative distance between the two moving plates 21 is changed, and further the relative distance between the tensioning assemblies 10 is changed. When the distance between the rollers 40 on the transmission device is shifted, resulting in a change in the relative distance between the conveyor strips 30, the tensioning assembly 10 can still tension the conveyor strips 30 by changing the distance between the shift plates 21. The base 20 can accommodate the conveyor strip 30 of the transmission in different conditions, and the versatility of the tensioning mechanism 100 is enhanced.

The base 20 of this embodiment is further provided with a fixing bolt 24 for fixing the base 20 to the transmission device, the fixing bolt 24 is disposed in the middle of the base 20 and located in the middle of the two moving plates 21, and the fixing bolt 24 penetrates through the fixing plate 22 to connect with the transmission device, so as to fix the whole tensioning mechanism 100.

Referring to fig. 5 and 6, the tension assembly 10 includes a moving portion, an elastic member 14, and a fixing portion 11. The fixed portion 11 is fixed on the base 20, the movable portion is movable along the fixed portion 11 to be away from or close to the fixed portion 11, and the elastic member 14 is located between the movable portion and the fixed portion 11.

One end of the moving part departing from the fixed part 11 is pressed against the conveying strip 30, and the elastic part 14 can stretch and retract; the movable part is close to the fixed part 11, and the elastic piece 14 compresses and stores energy; the elastic member 14 is extended to push the movable portion away from the fixed portion 11, so that the movable portion exerts an outward tension on the transfer ribbon 30.

A resilient, resilient member 14 is provided between the movable portion and the fixed portion 11 to urge the movable portion away from the fixed portion 11 when the resilient member 14 within the tensioning assembly 10 is extended, creating an outward tensioning force on the transfer bar 30. In the embodiment, the moving part presses against the conveying strip 30 from two directions, when the conveying strip 30 is loosened, the elastic parts 14 in the two tensioning assemblies 10 release the elastic force to push the moving part to move outwards so that the moving part presses against the conveying strip 30, so that length compensation is realized, a better tensioning effect is achieved on the conveying strip 30 of the transmission device, and the technical problem of abnormal sound caused by loose chain is solved.

It will be appreciated that the resilient member 14 may be any device having a compression rebound, and the present embodiment is preferably a spring.

Specifically, as shown in fig. 5 and 6, the moving part includes a pressing wheel 13 and a support 12, and the pressing wheel 13 is disposed on the support 12 and is used for pressing the conveying strip 30; the holder 12 is movably connected to the fixing portion 11.

Specifically, the pressing wheel 13 includes a rotating shaft 133, a bearing 132, and a sprocket 131. The chain wheel 131 is sleeved outside the bearing 132, the rotating shaft 133 penetrates through a center hole of the bearing 132, and two ends of the rotating shaft 133 are connected with the support 12, so that the pressing wheel 13 is fixed on the support 12. The sprocket 131 can rotate about the shaft 133 to cooperate with the outer conveyor belt 30 for driving. The outer ring in this embodiment is a sprocket 131 with teeth on the outside that can cooperate with the chain to be tensioned.

In this embodiment, the support 12 includes two connecting plates 121, the connecting plates 121 are symmetrically arranged in parallel at an end of the support 12 away from the fixing portion 11, and the pressing wheel 13 is disposed between the two connecting plates 121.

Specifically, the connecting plate 121 is two flat plates, and a hole for connecting with the rotating shaft 133 is formed in the connecting plate 121. Two ends of the rotating shaft 133 of the pressing wheel 13 are respectively and fixedly connected with the holes of the two connecting plates 121, so that the pressing wheel 13 is fixedly connected in the relative space of the two connecting plates 121.

Referring to fig. 5, the fixing portion 11 is provided with a first accommodating cavity, the support 12 is disposed in the first accommodating cavity, one side of the support 12 facing the fixing portion 11 is provided with a second accommodating cavity, and the elastic element 14 is located between the first accommodating cavity and the second accommodating cavity.

Specifically, the fixing portion 11 is provided with a first accommodating cavity, so that the fixing portion 11 forms a tubular structure with an opening at one end and a hollow interior. One end of the support 12 departing from the connecting plate 121 penetrates into the first accommodating cavity and can move left and right along the axis of the first accommodating cavity. The space formed by the second accommodating cavity and the first accommodating cavity on the support 12 is used for placing the elastic element 14. When the elastic member 14 is compressed and extended, the position of the support 12 is relatively changed.

In some embodiments, the bottom walls of the first receiving cavity and the second receiving cavity are provided with a boss 141 for limiting the elastic member 14. The elastic member 14 in this embodiment is a spring, the corresponding boss 141 is cylindrical, and the spring is sleeved on the boss 141, so that the movement of the support 12 can be prevented from being influenced by the left and right movement of the spring, and the arrangement of the boss 141 can increase the stability of the moving part.

In some embodiments, the sidewall of the fixing portion 11 is formed with two notches 111 disposed oppositely, so that the sidewall of the fixing portion 11 forms two side ears 112 extending outward along the axis. The space formed by the notches 111 can be used for the accommodating part to abut against the pressing wheel 13 when the moving part approaches the fixed part 11. The two side ears 112 extending outward along the axis can increase the guiding distance of the moving part, so that the moving part and the fixed part 11 move relatively to each other.

In some embodiments, the fixing portion 11 further comprises a fixing collar 113, the fixing collar 113 being disposed on an inner side surface of the side ear 112, opposite the connecting plate 121, for preventing the support 12 from rotating in the first housing cavity of the fixing portion 11.

Specifically, two fixing collars 113 are provided, each of which is provided on the inner side of the two side ears 112. One end of the fixed check ring 113 facing the connecting plate 121 is a plane, the fixed check ring 113 is fixed on the side ear part 112 through a bolt, and the plane of the fixed check ring 113 is opposite to the connecting plate 121 on the support 12 and is parallel to the connecting plate 121 on the support 12; and a certain clearance is reserved between the plane of the fixed check ring 113 and the connecting plate 121, so that the support 12 can move left and right in the first accommodating cavity along the axis of the first accommodating cavity, when the pressing wheel 13 on the support 12 receives deflection force, the fixed check ring 113 can press the connecting plate 121 to prevent the support 12 from rotating and deviating in the first accommodating cavity, and the risk of chain disengagement caused by mutual separation of the pressing wheel 13 and the conveying strip 30 due to deflection is avoided.

In some embodiments, the support 12 further includes a push rod 122, the push rod 122 is disposed on the bottom wall of the second receiving cavity and points to the bottom wall of the first receiving cavity on the fixing portion 11, and a through hole for the push rod 122 to pass through is disposed on the bottom wall of the first receiving cavity.

Specifically, the push rod 122 is disposed in the center of the bottom wall of the second accommodating cavity of the support 12 and penetrates through the through hole in the fixing portion 11 to the outside. When the tensioning mechanism 100 is required to be mounted on the transmission strip 30 of the transmission device, the movable part is moved toward the fixed part 11 by pulling the push rod 122, so that the elastic member 14 is compressed and charged. The free end of the push rod 122 is further provided with a connecting hole, which can be used for inserting a connecting device, so that the push rod 122 can be pulled more easily to compress the elastic member 14.

Installation process of the tensioning mechanism 100: as shown in fig. 7, the tensioning mechanism 100 is first fixed to the transmission device by the fixing bolt 24, so as to achieve the positioning and installation of the tensioning mechanism 100. Then, the push rod 122 is pulled to make the support 12 approach the fixing portion 11, the elastic element 14 is compressed, the elastic element 14 is charged, and then the pressing wheel 13 and the conveying strip 30 are engaged with each other, at this time, the elastic element 14 is in a compressed state, and the support 12 and the pressing wheel 13 can be pushed to move outwards, so as to tension the conveying strip 30. When the conveying strip 30 is loosened due to the change of the roller 40, the elastic member 14 can push the support 12 and the pressing wheel 13 to automatically tension the conveying strip 30, so that the length compensation is realized. The technical problem of abnormal sound caused by the slack of the chain is solved.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A tensioning mechanism for tensioning a conveyor bar, comprising:

a base;

the tensioning device comprises at least two tensioning assemblies which are mutually deviated, wherein each tensioning assembly comprises a moving part, an elastic part and a fixing part, the fixing part is fixed on the base, the moving part can move along the fixing part to be far away from or close to the fixing part, and the elastic part is positioned between the moving part and the fixing part;

one end of the moving part, which is far away from the fixed part, is pressed against the conveying strip, and the elastic part can stretch; the movable part is close to the fixed part, and the elastic piece compresses and stores energy; the elastic piece stretches to push the moving part to be far away from the fixed part, so that the moving part generates an outward tension force on the conveying strip.

2. The tensioning mechanism according to claim 1, wherein the moving part comprises an abutting wheel and a support, the abutting wheel is arranged on the support and is used for abutting against the conveying strip; the support is movably connected with the fixed part.

3. The tensioning mechanism according to claim 2, wherein the fixed portion is provided with a first receiving cavity, the support is provided in the first receiving cavity, a side of the support facing the fixed portion is provided with a second receiving cavity, and the elastic member is located between the first receiving cavity and the second receiving cavity.

4. The tensioning mechanism according to claim 3, wherein the bottom walls of the first accommodating cavity and the second accommodating cavity are provided with bosses for limiting the elastic member.

5. The tensioning mechanism according to claim 3, wherein the support further comprises a push rod, the push rod is arranged on the bottom wall of the second accommodating cavity and points to the bottom wall of the first accommodating cavity, and a through hole for the push rod to penetrate through is formed in the bottom wall of the first accommodating cavity.

6. The tensioning mechanism of claim 2, wherein the side wall of the fixed portion has two notches formed therein that are disposed opposite each other, such that the side wall of the fixed portion forms two side ears extending outwardly along the axis.

7. The tensioning mechanism according to claim 6, wherein the support comprises two connecting plates symmetrically arranged in parallel at an end of the support away from the fixing portion, and the pressing wheel is disposed between the two connecting plates.

8. The tensioning mechanism of claim 7, wherein the fixed portion further comprises a retaining collar disposed on an inner side of the side ear, opposite the web, for preventing rotation of the support within the fixed portion.

9. The tensioning mechanism of claim 1, wherein the base includes a fixed plate and a moving plate disposed on the fixed plate, the moving plate being movable relative to the fixed plate.

10. The tensioning mechanism according to claim 9, wherein the base comprises a connecting bolt, the moving plate is provided with a kidney-shaped hole, the fixed plate is provided with a through hole, and the connecting bolt connects the moving plate and the fixed plate through the kidney-shaped hole and the through hole.